Commit 62aed044 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

f2fs: add a tracepoint for f2fs_write_begin 



This patch adds a tracepoint for f2fs_write_begin to trace write op of user.

Signed-off-by: default avatarChao Yu <chao2.yu@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk.kim@samsung.com>
parent 8b376249

fs/f2fs/data.c

+2 −0
Original line number Diff line number Diff line
@@ -900,6 +900,8 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping, 
	struct dnode_of_data dn;

	int err = 0;



	trace_f2fs_write_begin(inode, pos, len, flags);



	f2fs_balance_fs(sbi);

repeat:

	err = f2fs_convert_inline_data(inode, pos + len);

include/trace/events/f2fs.h

+30 −0
Original line number Diff line number Diff line
@@ -659,6 +659,36 @@ DEFINE_EVENT_CONDITION(f2fs__submit_bio, f2fs_submit_read_bio, 
	TP_CONDITION(bio)

);



TRACE_EVENT(f2fs_write_begin,



	TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,

				unsigned int flags),



	TP_ARGS(inode, pos, len, flags),



	TP_STRUCT__entry(

		__field(dev_t,	dev)

		__field(ino_t,	ino)

		__field(loff_t,	pos)

		__field(unsigned int, len)

		__field(unsigned int, flags)

	),



	TP_fast_assign(

		__entry->dev	= inode->i_sb->s_dev;

		__entry->ino	= inode->i_ino;

		__entry->pos	= pos;

		__entry->len	= len;

		__entry->flags	= flags;

	),



	TP_printk("dev = (%d,%d), ino = %lu, pos = %llu, len = %u, flags = %u",

		show_dev_ino(__entry),

		(unsigned long long)__entry->pos,

		__entry->len,

		__entry->flags)

);



DECLARE_EVENT_CLASS(f2fs__page,



	TP_PROTO(struct page *page, int type),